Permutation-pad lock



(Model) 2 Sheets-Sheet 1.

O. E. PBGK.

PERMUTATION PADLOGK.

NO. 430,145. Patented June-'17 1890.

2 Sheets-Sheet 2..

(ModeL) E. PEOK.

PERMUTATION PADLOGK. No. 430,145. Patented June 17, 1890.

UNITED STATES i ATENT FFICE.

CHARLES E. PECK, OF KENT, OHIO.

PERM UTATlON-PADLOCK.

SPECIFICATION forming part of Letters Patent No. 430,145, dated June 17, 1890.

Application filed September 3, 1889. Serial No. 322,851. (ModeL) To all whom it may concern.-

Be it known that I, CHARLES E. PnoK, of Kent, in the county of Portage and State of Ohio, have inw ented certain new and useful Improvements in Permutation-Locks; and I do hereby declare the following to be a full,

clear, and exact description of the invention,

such as will enable others, skilled in the art to which it pertains to make and use the same.

My invention relates to improvements in permutation-locks and it consists in the parts and combinations of parts, as will be more fully described, and pointed out in the claims.

In the accompanying drawings, Figure l is a side elevation, partly in section, of the lock complete and in closed position. Fig. 2 is a plan of knob C. Fig. 3 is a plan of cap B. Fig. 4 is a vertical section through the center of casing A. Fig. 5 is a plan of the casing. Fig. 6 is a side elevation of shackle 1). Figs. 7, 8, and 9 are plans, respectively, of disk E, E, and E. Fig. 10 is a plan of a ring F. Fig. 11 shows elevations in detail,

hereinafter described.

A represents the casing; 13, the cover or cap of the casing; O, the hand-knob; D, the shackle, and E E E the disks or tumblers for locking the shackle. The casing isbored at A from the lower end for receiving with an easy fit hub O, and the casing is counterbored from above at A to receive the disks and intervening rings F. The casing and cap are bored at (L from above to receive the cylindrical section D of the shackle, and this hole is counterbored from below at a for receiving the head of screw D The shank of this screw engages a threaded hole in the end of the shackle, and the head of the screw, by engaging the shoulder at the upper end of the counterbore, prevents the shackle from being withdrawn only the limited distance necessary for operating the lock.

Cap B is held down to its seat on the casing by means of hollow screw 1), the hole in the cap being countersunk from above to admit the head of the screw flush with the top surface of the cap, and the free end of the shackle has a short reduced section 01 adapted to enter the upper section of the bore of this screw, the shoulder d of the shackle covering screw 1), so that the latter is inaccessible so long as the shackle is in locked position, and hence the cap cannot be removed to give internal access to the look without first releasing the shackle. The upper portion of the cylindrical section D of the shackle has a series of notches d for receiving, respectively, the edges of the disks, these disks being separated by rings F aforesaid, the rings corresponding in thickness with tongues 61, that separate the notches d. Each ring F has a lip or lug f on the periphery, that engages a corresponding internal groove a of the easing, by which engagement therings are held from turning, in consequence of which the movement of one disk is not transmitted to the other disk. These rings are cut away on the one side next the shackle, as shown, so that they never engage the shackle. DiskE rests on the shoulder at the bottom of counterbore A and this disk is secured to hub C of the knob by means of screw 0 by which arrangement the knob is held in place in the casing. Ledge O of the knob has a series of depressions 0, located at regular intervals, and the knob has a corresponding series of holes 0 for receiving, respectively, the removable pin 0 G is a click-pin, the rounded head G of which is adapted to engage successively depressions c. The head of this pin fits easily in counterbore a of the casing, and the shank g of the pin fits easily in the lower section of the bore of screw 1) aforesaid. A spring g is coiled around the shank of the pin, such spring bear-ing against the lower end of screw 1) and against the head G of the pin, the action of this spring tending to depress the pin and cause the head thereof to enter depressions c as these are brought successively below the pin, the latter being snubbed back against the action of the spring as the knob is turned from one depression to another, the click of the pin indicating the successive steps, or so-called notches, that the knob is turned.

Each disk E, E, and E has a notch E on the periphery thereof, adapted, respectively, to fit nicely the cylindrical section D of the'shackle between and below the notches of the latter, and when the notches of. the difierent disks are all in position embracing the shackle the latter may be withdrawn-that is to say, the shackle may be drawn up, so as to disengage section (I thereof from its seat in the hollow screw aforesaidafter which the shackle may be turned to the one side to disengageitfrom the hasp or whatever it maybe applied to for fastening-for instance, door, gate, drawer, or other device. It will be observed that when the shackle is thus drawn upward the cylin drical section thereof below notches (Z hold the disks from turning, so that these disks remain in place to admit of the returning of the shackle; hence no manipulation of the lock is required in order to return the shackle. WVith various permutation-locks heretofore in use the arrangement is such that if the knob is turned by accident or otherwise while the shackle is drawn out the tumblers have to be readjusted to admit of returning the shackle to its place. lVith my improved construction this difficulty is, as aforesaid, overcome.

Disk E has a series of holes e, corresponding with holes 0 of hub O, for receiving pin 0 aforesaid, and by reason of this pin coupling the hub and disk E the knob and the disk move always in unison. 'lhe knob has a mark of some kind on the periphery thereof-for instance, as shown at c -and the easing has a corresponding mark-for instance, as at a and these marks, when opposite each other, indicate the starting-point. By turning the knob in the one direction or the other a given number of notches from the startingpoint, according to the location of pins 0 within the holes of knob-hub and disk, the latter is brought in position with its notch E opposite the shackle. The central portions of disks E E are cut away; but each of these two disks has internal shoulders, respectively e e and 6 6 that are in the line or pathway of pin 0 and consequently these disks may be turned on their axes by the engagement of this pin with these internal shoulders.

In operating the lock, the shackle thereof being in position closed and fastened by the disk, the hand-knob is turned from the starting-point in the one direction a given number of notches, whereby pin 0 engages the opposing shoulders e of the upper disk E and brings notch O of this disk opposite the shackle, in which position this disk is allowed for the time being to remain. The knob is then reversed the required number of notches to cause pin 0 to engage the opposing shoulder 6 of disk E, whereby this disk is moved, with its notch E in position opposite or embracing the shackle. Next the knob is again reversed and turned the number of notches required to bring disks E in position with its notch E opposite the bolt, whereupon the shackle may be withdrawn. Bywithdrawing pin 0 and placing it in different holes the numbers of the combination will of,course be changed. I-Ioles marked 1 may be made in hub O and disk E, midway between the regular holes, and when pin 0 is in this 7} a halfnotch will accrue in the numbers of the combinationthat is to say, the knob will be stopped when pin (1% is midway between depressions c.

In assembling the paits, first cap 13, shackle D, and screw 1) are assembled in the order named and the cap and shackle are turned to the one side of the casing. Next, spring g, pin G, and knob (1 may be assembled in the order named, followed by disk E and screw C The upper disks and rings follow next in order, together with pin 0 after which the cap may be turned to its place over the casing and secured by the hollow screw 1), thus completing the assemblage of parts. At any time when the shackle is unfastened by re moving screw 5 and turning cap 13 to the one side'access is had to pin 0 for changing the latter into a different hole. The shifting of the pin may be done by the fingers in case of large or medium sized looks, or by means of pliers in case of a small lock. lVhen the pin is in position, the upper end thereof comes so close to cap B that the pin is thereby kept in position. It might be remarked that the number of disks may be increased in case it is desired to construct a more complicated lock, or, more properly speaking, a lock havin 59; more combinations. It will be observed, also, that there is no dial for counting the numbers of the combination mechanism, the click-pin aforesaid serving for such purpose. The marks on the knob and casing for ascertaining the starting-point should be of such raised or depressed character that they may be determined in the dark, in which case the lock can .be operated just as successfully and expeditiously in the dark as in the light.

In locks having a dial, and consequently having no click, an expert having a sensitive touch can usually detect the engagement of the tumblers with the mechanism that moves the tumblers, and hence can decipher the combination. lVith my improved construction the action of the click-pin is so positive as to render imperceptible the engagement of pin 0 against the shoulders of the disk, and hence an expert or burglar has nothing from which he can decipher the combination; but the position in which the pin engages the shoulders of the disks does not indicate in the least the positions at which the disks respectively stop combination to which the lock is set can have to engage the depressions in the knob as the latter is turned, substantially as set forth.

2. In a permutation-lock, the combination of a knob journaled in the casing, a series of locking-disks, the one disk being pivotally secured to the knob, corresponding series of holes in the knob and connected disk, and a pin adapted to enter registering holes of the said disk and knob,such pin being adapted to engage the shoulders of the other locking-disks, substantially as set forth.

3. In a permutation-lock, the combination, with the casing, of a removable cap secured to the casing by means of a hollow screw and a CHARLES E. PECK.

Witnesses:

CHAS. H. DORER, ALBERT E. LYNCH. 

